20531588

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 46539360

約数和(自身を除く): 26007772

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 89, 98, 107, 154, 178, 196, 214, 308, 356, 428, 539, 623, 749, 979, 1078, 1177, 1246, 1498, 1958, 2156, 2354, 2492, 2996, 3916, 4361, 4708, 5243, 6853, 8239, 8722, 9523, 10486, 13706, 16478, 17444, 19046, 20972, 27412, 32956, 38092, 47971, 57673, 66661, 95942, 104753, 115346, 133322, 191884, 209506, 230692, 266644, 419012, 466627, 733271, 933254, 1466542, 1866508, 2933084, 5132897, 10265794, 20531588]

約数ペア:

[(1, 20531588), (2, 10265794), (4, 5132897), (7, 2933084), (11, 1866508), (14, 1466542), (22, 933254), (28, 733271), (44, 466627), (49, 419012), (77, 266644), (89, 230692), (98, 209506), (107, 191884), (154, 133322), (178, 115346), (196, 104753), (214, 95942), (308, 66661), (356, 57673), (428, 47971), (539, 38092), (623, 32956), (749, 27412), (979, 20972), (1078, 19046), (1177, 17444), (1246, 16478), (1498, 13706), (1958, 10486), (2156, 9523), (2354, 8722), (2492, 8239), (2996, 6853), (3916, 5243), (4361, 4708)]